internal static void Decode(AsnReader reader, Asn1Tag expectedTag, out PBEParameter decoded)
{
if (reader == null)
{
throw new ArgumentNullException(nameof(reader));
}
decoded = default;
AsnReader sequenceReader = reader.ReadSequence(expectedTag);
if (sequenceReader.TryReadPrimitiveOctetStringBytes(out ReadOnlyMemory <byte> tmpSalt))
{
decoded.Salt = tmpSalt;
}
else
{
decoded.Salt = sequenceReader.ReadOctetString();
}
if (!sequenceReader.TryReadInt32(out decoded.IterationCount))
{
sequenceReader.ThrowIfNotEmpty();
}
sequenceReader.ThrowIfNotEmpty();
}
static PssParamsAsn()
{
PssParamsAsn decoded = default;
AsnReader reader;
reader = new AsnReader(s_defaultHashAlgorithm, AsnEncodingRules.DER);
System.Security.Cryptography.Asn1.AlgorithmIdentifierAsn.Decode(reader, out decoded.HashAlgorithm);
reader.ThrowIfNotEmpty();
reader = new AsnReader(s_defaultMaskGenAlgorithm, AsnEncodingRules.DER);
System.Security.Cryptography.Asn1.AlgorithmIdentifierAsn.Decode(reader, out decoded.MaskGenAlgorithm);
reader.ThrowIfNotEmpty();
reader = new AsnReader(s_defaultSaltLength, AsnEncodingRules.DER);
if (!reader.TryReadInt32(out decoded.SaltLength))
{
reader.ThrowIfNotEmpty();
}
reader.ThrowIfNotEmpty();
reader = new AsnReader(s_defaultTrailerField, AsnEncodingRules.DER);
if (!reader.TryReadInt32(out decoded.TrailerField))
{
reader.ThrowIfNotEmpty();
}
reader.ThrowIfNotEmpty();
}
public static int ReadInt32(this AsnReader reader, Asn1Tag tag)
{
if (reader.TryReadInt32(tag, out int value))
{
return(value);
}
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding);
}
internal static void Decode(AsnReader reader, Asn1Tag expectedTag, out Pbkdf2Params decoded)
{
if (reader == null)
{
throw new ArgumentNullException(nameof(reader));
}
decoded = default;
AsnReader sequenceReader = reader.ReadSequence(expectedTag);
AsnReader defaultReader;
System.Security.Cryptography.Asn1.Pbkdf2SaltChoice.Decode(sequenceReader, out decoded.Salt);
if (!sequenceReader.TryReadInt32(out decoded.IterationCount))
{
sequenceReader.ThrowIfNotEmpty();
}
if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(Asn1Tag.Integer))
{
if (sequenceReader.TryReadUInt8(out byte tmpKeyLength))
{
decoded.KeyLength = tmpKeyLength;
}
else
{
sequenceReader.ThrowIfNotEmpty();
}
}
if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(Asn1Tag.Sequence))
{
System.Security.Cryptography.Asn1.AlgorithmIdentifierAsn.Decode(sequenceReader, out decoded.Prf);
}
else
{
defaultReader = new AsnReader(s_defaultPrf, AsnEncodingRules.DER);
System.Security.Cryptography.Asn1.AlgorithmIdentifierAsn.Decode(defaultReader, out decoded.Prf);
}
sequenceReader.ThrowIfNotEmpty();
}
internal static void Decode(AsnReader reader, Asn1Tag expectedTag, out PssParamsAsn decoded)
{
if (reader == null)
{
throw new ArgumentNullException(nameof(reader));
}
decoded = default;
AsnReader sequenceReader = reader.ReadSequence(expectedTag);
AsnReader explicitReader;
AsnReader defaultReader;
if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 0)))
{
explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 0));
System.Security.Cryptography.Asn1.AlgorithmIdentifierAsn.Decode(explicitReader, out decoded.HashAlgorithm);
explicitReader.ThrowIfNotEmpty();
}
else
{
defaultReader = new AsnReader(s_defaultHashAlgorithm, AsnEncodingRules.DER);
System.Security.Cryptography.Asn1.AlgorithmIdentifierAsn.Decode(defaultReader, out decoded.HashAlgorithm);
}
if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 1)))
{
explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 1));
System.Security.Cryptography.Asn1.AlgorithmIdentifierAsn.Decode(explicitReader, out decoded.MaskGenAlgorithm);
explicitReader.ThrowIfNotEmpty();
}
else
{
defaultReader = new AsnReader(s_defaultMaskGenAlgorithm, AsnEncodingRules.DER);
System.Security.Cryptography.Asn1.AlgorithmIdentifierAsn.Decode(defaultReader, out decoded.MaskGenAlgorithm);
}
if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 2)))
{
explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 2));
if (!explicitReader.TryReadInt32(out decoded.SaltLength))
{
explicitReader.ThrowIfNotEmpty();
}
explicitReader.ThrowIfNotEmpty();
}
else
{
defaultReader = new AsnReader(s_defaultSaltLength, AsnEncodingRules.DER);
if (!defaultReader.TryReadInt32(out decoded.SaltLength))
{
defaultReader.ThrowIfNotEmpty();
}
}
if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 3)))
{
explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 3));
if (!explicitReader.TryReadInt32(out decoded.TrailerField))
{
explicitReader.ThrowIfNotEmpty();
}
explicitReader.ThrowIfNotEmpty();
}
else
{
defaultReader = new AsnReader(s_defaultTrailerField, AsnEncodingRules.DER);
if (!defaultReader.TryReadInt32(out decoded.TrailerField))
{
defaultReader.ThrowIfNotEmpty();
}
}
sequenceReader.ThrowIfNotEmpty();
}
